Hastelloy flanges have excellent corrosion resistance in both oxidizing and reducing media which makes it well suited for a variety of strong corrosive applications. Hastelloy flanges also have exceptional resistance to both sulfuric acid and hydrochloric acid.
Because Hastelloy flanges resist some of the most severe media, Hastelloy flanges are often utilized in chemical processing applications where acid chlorides, solvents, formic and acetic acids, acetic anhydride, wet chlorine gas, hypochlorites, chlorine solutions and phosphoric acid are used. For chemical processing applications, Hastelloy C276 is the most common grade and one of the most corrosion resistant nickel alloys – exceeding that of most other nickel alloy grades like Inconel or Monel.
Specifications of Hastelloy C276 Flanges
Specifications | ASTM B564 / ASME SB564 |
Standard | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
Size | 1/2″NB TO 60″NB |
Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
Standards | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
ASTM B564 Hastelloy C276 Flanges Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | AFNOR | GOST | JIS | OR | EN |
Hastelloy C276 | 2.4819 | N10276 | - | ХН65МВУ | NW 0276 | ЭП760 | NiMo16Cr15W |
Hastelloy C276 Flanges Chemical Composition
GRADE | Ni | Mo | Cr | C | Co | MN | SI | FE | W | S | V | P |
Hastelloy C276 | Bal | 15-17 | 14.5 - 16.5 | 0.01 Max | 2.5 Max | 1.0 Max | 0.08 Max | 4 - 7 | 3 - 4.5 | 0.03 Max | 0.35 Max | 0.04 Max |
Hastelloy C276 Flanges Mechanical Properties
Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
8.89 g/cm33 | 1370 °C (2500 °F) | Psi – 52,000 , MPa – 355 | Psi – 1,15,000 , MPa – 790 | 40 % |
Hastelloy Chemistry & Specifications
- N10276
- ASTM B574
- ASME SB574
- Werkstoff 2.4819
- ASTM G28-A/B
- EN 10204-3.1
- ASME B18.2.2
- ASTM B619
- ASME SB619
- ASTM B366
- ASME SB366
- WPHC276
- ASME B16.11
- ASTM B564/ASME SB564
- COLD DRAWN
- HOT FINISHED
- ASTM B575
- ASME SB575
- COLD ROLLED
- HOT ROLLED
- ASME B16.9
- ASME B16.5
- ASTM B462
- ASME SB462
Hastelloy C276 | Ni | Mo | Cr | Fe | W | Co | Mn | V | Si | P | S | C |
MIN % | BAL | 15.0 | 14.5 | 4.0 | 3.0 | – | – | – | – | – | – | – |
MAX % | 17.0 | 16.5 | 7.0 | 4.5 | 2.50 | 1.00 | 0.35 | 0.08 | 0.04 | 0.03 | 0.01 |
Hastelloy B2 alloy, UNS N10665, resistance to hydrochloric acid and other strongly reducing chemicals but has poor corrosion resistance to oxidizing chemicals and in the presence of ferric or cupric salts. In addition, Hastelloy B2 has excellent resistance to pitting and stress corrosion cracking. However B2 has little chromium, and it should NOT be used with oxidizing media in the presence of salts.
Hastelloy B2 Specifications:
- N10665,
- ASTM B619
- Werkstoff 2.4617
- ASME SB619
- ANNEALED
- B/SB619 CLASS I OR II
- X-RAY PER ASME SECTION VIII DIVISION 1 UW-51
- MERCURY FREE
- EN 10204-3.1
- ASTM B366
- ASME SB366
- WPHB2-S
- ASME B16.11
- ASTM B335
- ASME SB335
- ASME B16.3
- MSS SP-83
- ASTM B564/ASME SB564
- COLD DRAWN
- HOT FINISHED
- ASTM B333
- ASME SB333
- SHEET IS COLD ROLLED
- HOT ROLLED
- ENIMO-7
- AWS A-5.11
- ASME SFA-5.11
Hastelloy B2 | Ni | Mo | Cr | Fe | Co | Mn | Si | P | S | C |
Nominal % | BAL | 26 – 30 | 1 Max | 2 Max | 1 Max | 1 Max | 0.10 | 0.040 | 0.030 Max | 0.020 Max |
Hastelloy B3 alloy, UNS N10675, is specifically designed to deal with very aggressive hydrochloric acid (HCl), hyrdrobromic acid (HBr) and sulfuric acids (H2SO4) as well as acetic, formic and phosphoric acids. Additionally Hastelloy B3 has improved structural integrity over B2. However B3 has little chromium, and it should NOT be used with oxidizing media in the presence of salts.
Hastelloy B3 Specifications:
- N10675
- ASTM B366
- ASME SB366
- Werkstoff 2.4600
- WPHB3-W
- ASME B16.9
- ANNEALED
- MERCURY FREE
- EN 10204-3.1 (W/O X-RAY)
- ASTM B335
- ASME SB335
- ASTM B564
- ASME SB564
- DIMENSIONS PER ASME B16.5
- ASTM B462
- ASME SB462
- ASME B16.5
- COLD DRAWN
- HOT FINISHED
- ASTM B626
- ASME SB626
- B/SB626 CLASS III
- ASTM B333
- ASME SB333
- COLD ROLLED
- HOT ROLLED
Hastelloy B3 | Ni | Mo | Cr | Fe | Co | Mn | Si | P | S | C | W |
Nominal % | 65 Min | 28.5 | 1.5 | 1.5 | 3 Max | 1 Max | 0.10 | 0.040 | 0.030 Max | 0.020 Max | 0.020 Max |
Hastelloy C2000 alloy, UNS N06200, is a corrosion resistant alloy with excellent resistance to uniform corrosion in oxidizing or re-ducing environments. Due to the addition of copper and the high content of chromium, it has enhanced corrosion resistance to sulfuric acid and process streams contaminated with ferric ions. In addition it has excellent resistance to stress corrosion cracking and superior resistance to localized corrosion as compared to C-276 alloy.Hastelloy C2000 Specifications:
- SB 575/B 575
- SB 574/B 574
- SB 366/B 366
- SB 462/B 462
- SB 564/B 564
- SB 462/B 462
- Werkstoff 2.4675
- NACE MR0175 ISO 15156
Hastelloy C2000 | Ni | Mo | Cr | Fe | Co | Mn | Si | Cu | Al | C |
Nominal % | 59 BAL | 16.0 | 23.0 | 3 Max | 2 Max | 0.5 Max | 0.08 | 1.6 | 0.5 Max | 0.01 Max |
Alloy X, UNS N06002, is most known for its exceptional combination of high-temperature oxidation resistance up to 2000°C and high-temperature strength. Being stable, strong, and ductile at high temperatures are its most notable characteristics which is often utilized in gas turbine components and furnace components.
Hastelloy X Specifications:
- AMS 5536
- AMS 5754
- AMS 5798
- ASME SB 435
- ASME SB 572
- ASME Sect. IX P No. 43
- ASME Section IX P No. 43
- ASME SFA 5.14, ASTM B 435
- ASTM B 572
- EN 2.4665
- GE B50A436
- GE B50T83
- GE B50TF24
- PDS 1038 (X-low)
- PDS 15102QFC
- UNS N06002
- Werkstoff 2.4665
Hastelloy X | Ni | Mo | Cr | Fe | W | Co | Mn | Ti | Si | P | S | B | Al | C | Cu |
MIN % | BAL | 8.0 | 20.5 | 17.0 | 0.2 | 0.5 | – | – | – | – | – | – | – | 0.05 | – |
MAX % | 10.0 | 23.5 | 20.0 | 1.0 | 2.50 | 1.0 | 1.00 | 1.00 | 0.04 | 0.03 | 0.01 | 0.50 | 0.15 | 0.05 |